Operon - Definition, Structure and Function - Biology Dictionary
2017年9月7日 · An operon is a cluster of functionally-related genes that are controlled by a shared operator. Operons consist of multiple genes grouped together with a promoter and an operator. Operons are present in prokaryotes (bacteria and archaea), but …
Operon - Definition, Structure, Parts, Types, and Diagram
2023年8月29日 · An operon is the functional unit of genetic regulation found in prokaryotic cells, such as bacteria. It consists of a cluster of genes that work together as a single unit to give a single messenger RNA (mRNA) molecule , which then encodes multiple proteins.
Operon - Wikipedia
Today, the operon is simply defined as a cluster of genes transcribed into a single mRNA molecule. Nevertheless, the development of the concept is considered a landmark event in the history of molecular biology.
Operon | DNA, RNA & Protein Regulation | Britannica
operon, genetic regulatory system found in bacteria and their viruses in which genes coding for functionally related proteins are clustered along the DNA. This feature allows protein synthesis to be controlled coordinately in response to the needs of the cell.
Operon – Structure, Definition, Types, Functions
2024年5月30日 · An operon is a functional unit of DNA in prokaryotes that contains a cluster of genes under the control of a single promoter, allowing for coordinated expression of related genes. The operon is a fundamental genetic regulatory system found in prokaryotes, consisting of several key DNA components that work in tandem to control gene expression.
11.7: Gene Regulation - Operon Theory - Biology LibreTexts
2024年4月21日 · In bacteria and archaea, structural proteins with related functions are usually encoded together within the genome in a block called an operon and are transcribed together under the control of a single promoter, resulting in the formation of a polycistronic transcript (Figure 11.7.1).
15: Positive and negative control of gene expression
2023年6月20日 · An operon is a cluster of coordinately regulated genes. It includes structural genes (generally encoding enzymes), regulatory genes (encoding, e.g. activators or repressors) and regulatory sites (such as promoters and operators).
The Lac Operon Explained: What it is and how it works | IDT
2024年3月18日 · What is an operon? An operon is a set of genes that are regulated together and controlled by a single promoter. This unit of genetic material consists of a promoter, operator, and structural gene(s) that are transcribed into mRNA together.
Operon Definition and Examples - Biology Online Dictionary
2022年10月22日 · A group of gene s or a segment of DNA that functions as a single transcription unit. It is comprised of an operator, a promoter, and one or more structural gene s that are transcribed into one polycistronic mRNA.
2.5: Gene and Operon - Biology LibreTexts
In prokaryotes, genes which encode proteins with relationships in a metabolic pathway form Operons - which produce polycistronic mRNA's. An operon is in bacterial DNA, a cluster of contiguous genes transcribed from one promoter that gives rise to a polycistronic mRNA. e.g. Trp Operon - involved in the biosynthesis of the amino acid tryptophan: